Home / 409,756,379.91-614,546,507.21-129,659,490.69

Finding the Fourth Proportional to 409,756,379.91, 614,546,507.21 and 129,659,490.69

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Solution

The fourth proportional to 409,756,379.91, 614,546,507.21 and 129,659,490.69 is: 194,461,370.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,756,379.91 : 614,546,507.21 = 129,659,490.69 : x
  2. Step 2: Convert to fraction form
    409,756,379.91/614,546,507.21 = 129,659,490.69/x
  3. Step 3: Cross multiply
    409,756,379.91x = 614,546,507.21 × 129,659,490.69
  4. Step 4: Simplify right side
    409,756,379.91x = 79,681,787,129,518,720
  5. Step 5: Solve for x
    x = 79,681,787,129,518,720/409,756,379.91
  6. Step 6: Final answer
    x = 194,461,370.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.